PX to REM Converter
Convert between pixels and REM units for responsive CSS
| Pixels | REM | Sample |
|---|---|---|
| 12px | 0.75rem | Aa |
| 14px | 0.875rem | Aa |
| 16px | 1rem | Aa |
| 18px | 1.125rem | Aa |
| 20px | 1.25rem | Aa |
| 24px | 1.5rem | Aa |
| 32px | 2rem | Aa |
| 40px | 2.5rem | Aa |
| 48px | 3rem | Aa |
| 64px | 4rem | Aa |
REM is relative to the root <html> font size - usually 16px by default. Using REM instead of PX means your layout scales when users change their browser text size.
Comment ça marche
- 1Set the base
The default root font size is 16px - the browser default. Change it if your CSS overrides it.
- 2Type in either field
Enter pixels or REM; the other updates instantly.
- 3Reference the table
Common design-system sizes are pre-converted, with a visual preview of each font size.
À propos de PX to REM Converter
Free online PX to REM converter. Type a pixel value to get the REM equivalent (or vice versa) based on your root font size. Includes a common-sizes table with live preview. Runs entirely in your browser. PX to REM Converter sur 712 Tools tourne entièrement dans ton browser via des APIs JavaScript natives - aucun server ne voit jamais tes données. Résultats instantanés, privacy complète, et aucune limite d'upload.
Que ce soit pour une session de debug, un sanity check rapide ou un incident en prod, cet outil est gratuit à utiliser autant que tu veux. Pas de watermarks, pas de signup et pas d'ads dans l'outil.
Questions fréquentes
Why use REM instead of PX?
REM scales with the user's root font size - so users who bump their browser text size get a larger layout too. Better accessibility with no extra work.
What about EM?
EM is relative to the parent element's font size - useful for internal component scaling but confusing across a whole layout. REM is relative to the root only.
What if my root is 62.5%?
That's the 'REM = 10px' trick - set root font-size to 62.5% and 1rem = 10px. Change the base field to 10 in this tool.
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